Physicochemical Characterization and Corrosion Inhibition Potential of Ficus benjamina (FB) Gum for Aluminum in 0.1 M HCl

Q3 Multidisciplinary Walailak Journal of Science and Technology Pub Date : 2014-09-04 DOI:10.14456/1222

N. Eddy, P. Ameh, A. Ibrahim

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Abstract

Examination of the physical (colour, odour, pH, solubility in various solvent) and chemical (GCMS and FTIR) characteristics of Ficus benjamina gum revealed that the gum is yellowish in colour, mildly acidic and ionic in nature. Major constituents of the gums were found to be sucrose and d-glucose, which constituted 60.92 % of its chemical constituents while various carboxylic acids (albietic acid (1.00 %); hexadecanoic acid (4.41 %); 9-octadecanoic acid (1.00 %), stearic acid (3.01 %); oleic acid (0.10 %); octadecanoic acid (9.12 %) and 6,13-pentacenequinone (20.43 %) accounted for the remaining constituents. Functional groups identified in the gum were found to be those typical for other carbohydrates. From the knowledge of the chemical structures of compounds that constitutes the gum, the corrosion inhibition potentials of the gum was ascertained and from weight loss analysis, the gum was found to be an active inhibitor against the corrosion of aluminum in solutions of tetraoxosulphate (VI) acid. The gum acted as an adsorption inhibitor that favours the mechanism of chemical adsorption and supported the Frumkin and Dubinin-Radushkevich adsorption models. doi: 10.14456/WJST.2015.94

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本雅明榕树(FB)胶在0.1 M HCl中对铝的缓蚀性能及理化性质

本雅明榕树胶的物理特性(颜色、气味、pH值、在各种溶剂中的溶解度)和化学特性(GCMS和FTIR)检测表明，本雅明榕树胶的颜色为淡黄色，性质为微酸性和离子型。主要成分为蔗糖和d-葡萄糖，占其化学成分的60.92%，各种羧酸(白二酸(1.00%);十六烷酸(4.41%);9-十八烷酸(1.00%)、硬脂酸(3.01%);油酸(0.10%);其余成分为十八烷酸(9.12%)和6,13-pentacenequinone(20.43%)。在口香糖中发现的官能团是其他碳水化合物的典型官能团。通过对组成树胶的化合物的化学结构的了解，确定了树胶的缓蚀电位，并从失重分析中发现树胶在四氧硫酸(VI)酸溶液中对铝具有有效的缓蚀剂。胶作为一种吸附抑制剂，有利于化学吸附机制，支持Frumkin和Dubinin-Radushkevich吸附模型。doi: 10.14456 / WJST.2015.94

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来源期刊

Walailak Journal of Science and Technology Multidisciplinary-Multidisciplinary

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

24 weeks

期刊介绍： The Walailak Journal of Science and Technology (Walailak J. Sci. & Tech. or WJST), is a peer-reviewed journal covering all areas of science and technology, launched in 2004. It is published 12 Issues (Monthly) by the Institute of Research and Innovation of Walailak University. The scope of the journal includes the following areas of research : - Natural Sciences: Biochemistry, Chemical Engineering, Chemistry, Materials Science, Mathematics, Molecular Biology, Physics and Astronomy. -Life Sciences: Allied Health Sciences, Biomedical Sciences, Dentistry, Genetics, Immunology and Microbiology, Medicine, Neuroscience, Nursing, Pharmaceutics, Psychology, Public Health, Tropical Medicine, Veterinary. -Applied Sciences: Agricultural, Aquaculture, Biotechnology, Computer Science, Cybernetics, Earth and Planetary, Energy, Engineering, Environmental, Food Science, Information Technology, Meat Science, Nanotechnology, Plant Sciences, Systemics